package com.study.guide.pack.unsplicing;

import java.util.Date;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;

public class TimeServerHandler extends SimpleChannelInboundHandler<Object> {
	private int counter;
	@Override
	protected void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
		ByteBuf buf = (ByteBuf)msg;
		byte[] req = new byte[buf.readableBytes()];
		buf.readBytes(req);
		String body =new String(req,"UTF-8")
				.substring(0,
						req.length-System.getProperty("line.separator").length());
		System.out.println("The time server receive order: "+body+" ; the counter is : "+ ++counter);
		String currentTime =
				"query time order".equalsIgnoreCase(body)?
						new Date(System.currentTimeMillis()).toString():"bad order";

		ByteBuf resp =Unpooled.copiedBuffer(currentTime.getBytes());
		ctx.writeAndFlush(resp);
	}

	@Override
	public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
		ctx.flush();
	}

	@Override
	public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
		ctx.close();
	}

}
